板式换热器传热和阻力特性的实验研究  

Experimental study on pressure drop and heat transfer characteristics of plate heat exchanger

作　　者：徐志明[1] 郭进生[1] 郭军生 黄兴[1] 张仲彬[1] 

机构地区：[1]东北电力大学能源与机械工程学院,吉林吉林132012 [2]中建股份阿尔及利亚分公司,北京100083

出　　处：《热科学与技术》2010年第1期11-16,共6页Journal of Thermal Science and Technology

基　　金：国家重点基础研究发展规划项目(2007CB206904)

摘　　要：利用搭建的液-液型板式换热器试验平台,根据实验数据运用定性雷诺数法拟合出传热关联式,找出Nu与摩擦因子f之间的通用关系式,为板式换热器的设计计算提供了依据。运用传热量与功率的消耗比来评价板式换热器的性能,找出了影响其性能的主要因素,进一步澄清了单纯依靠提高流速来增加传热性能是不经济的。The heat transfer correlation was fitted by qualitative Reynolds number method based on the experimental data obtained from the experimental system of the liquid-liquid type plate heat exchanger. Meanwhile, the general relationship between Reynolds number and friction factor was found. All of these provide a basis for the design and calculation of plate heat exchanger. The performance of plate heat exchanger was evaluated based on heat transfer and power consumption ratio and the main factors which affect its performance were identified. It is clarified that it is not an economical way to increase the heat transfer performance by improving the flow only.

关 键 词：板式换热器 传热关联式 有效度 

分 类 号：TK124[动力工程及工程热物理—工程热物理]